#xmind-viewer--toolbar {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  padding: 5px;
  background-color: #fff;
  opacity: 0.3;
  box-shadow: 0 0 5px 2px #ccc;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  transition: opacity 0.2s ease-in-out;
}

#xmind-viewer--toolbar:hover {
  opacity: 1;
}

.xmind-viewer--toolbar-sheets {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 5px;
  flex: 1;
}
.xmind-viewer--toolbar-sheets:before {
  content: '页面:';
}

.xmind-viewer--toolbar-buttons {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 5px;
}
